[issue46417] Clear static types in Py_Finalize() for embedded Python

[STINNER Victor]

STINNER Victor <vstinner at python.org> added the comment:

If tomorrow static types are shared between sub-interpreters, it doesn't solve this problem: we still need to release memory allocated by Py_Initialize() in Py_Finalize() when Python is embedded. This issue is a sub-set of the big bpo-1635741 which explains the rationale. Again, this issue is not about sub-interpreters.

> Anyway, for this issue: is there a way to test if the types are correctly reinitialized if there are multiple finalize/init cycles? I worry about introducing more unexpected issues here.

I wasn't sure how to test it. But well, Dong-hee and you asked for tests, so I added tests for my PR ;-)

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<https://bugs.python.org/issue46417>
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